Mining air door opening and closing detection device

Abstract

The utility model discloses a mining air door opening and closing detection device, which relates to the technical field of mine automation and comprises an air door roadway, a door frame is fixedly arranged in the air door roadway, door shafts are symmetrically and rotatably arranged on the door frame, air door plates are fixedly arranged on the door shafts, and air cylinders for controlling the air door plates to be closed are arranged on the door frame. The door shaft is connected with an angle encoder through a coupler, infrared correlation sensors are fixedly arranged on the air door plates, the transmitting end and the receiving end of each infrared correlation sensor are fixedly arranged on the corresponding air door plate, and when the air door plates are closed, the receiving ends of the infrared correlation sensors detect continuous infrared pulses and send the infrared pulses to the air door plates. Through cooperation of the infrared correlation sensor and the angle encoder, multiple detection of the air door plate is achieved, and the problems that in the prior art, magnetic blocks are arranged on the two sides of a door crack for detection, but dust is likely to be attached to the mine environment to cause magnetic attraction failure, and single-point detection has the misjudgment risk are solved.

Description

Technical Field

[0001] This utility model relates to the field of mine automation technology, specifically a mine ventilation door opening and closing detection device. Background Technology

[0002] Mining underground roadways are crisscrossed and interconnected. In order to ensure that the airflow flows in the designed direction, air doors need to be installed in the two connecting roadways to control the airflow. The stable opening and closing of the air doors is crucial to the airflow control.

[0003] Chinese utility model patent CN220353890U discloses a mine ventilation door control system: It includes a ventilation door controller installed in the ventilation door tunnel, electrically connected to the ventilation door opening and closing actuator within the tunnel. LiDAR sensors are installed both inside the tunnel and outside the ventilation door. An opening / closing sensor is installed on the ventilation door, and both the LiDAR and the opening / closing sensor are electrically connected to the ventilation door controller. When the ventilation door is closed, the magnetic blocks of the first and second opening / closing sensors are attracted together. When the ventilation door is opened, the magnetic blocks of the two sensors disengage, thus determining that the ventilation door is open.

[0004] However, existing technologies still have shortcomings:

[0005] The detection was carried out by placing magnetic blocks on both sides of the door gap. However, dust easily adheres in the mining environment, causing the magnetic attraction to fail. Furthermore, single-point detection carries the risk of misjudgment, such as the door deforming, causing partial closure but not overall locking. Utility Model Content

[0006] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a mine ventilation door opening and closing detection device to solve the problems of existing technologies that use magnetic blocks arranged on both sides of the door gap for detection, but dust easily adheres in the mine environment, causing the magnetic attraction to fail, and single-point detection has the risk of misjudgment.

[0007] To achieve the above objectives, this utility model proposes a mine ventilation door opening and closing detection device, including a ventilation door roadway, a door frame fixedly installed inside the ventilation door roadway, a door hinge symmetrically rotated on the door frame, a door panel fixedly installed on the door hinge, a cylinder for controlling the closing of the door panel installed on the door frame, an angle encoder connected to the door hinge via a coupling, and an infrared beam sensor fixedly installed on the door panel, with the transmitting end and receiving end of the infrared beam sensor respectively fixedly installed on one of the door panels.

[0008] As a further embodiment of this utility model: the door frame is provided in pairs, which are located at both ends of the ventilation door passage.

[0009] As a further embodiment of this utility model: an air pipeline for controlling the air door switch is provided in the air door tunnel.

[0010] As a further embodiment of this utility model: the air pipe for controlling the air door switch is laid along the side wall of the air door tunnel.

[0011] As a further embodiment of this utility model: the damper switch control air pipeline is connected to a damper controller and a cylinder that controls the opening and closing of the damper panel.

[0012] As a further embodiment of this utility model: a manual control box is provided on the side of the ventilation door tunnel, and the manual control box is electrically connected to the ventilation door switch control air pipeline.

[0013] As a further embodiment of this utility model: a dustproof frame is fixedly installed on the damper door panel, and the infrared beam sensor is installed inside the dustproof frame.

[0014] As a further embodiment of this utility model: one side of the dustproof frame is opened up, and several ventilation slots are provided on the other side.

[0015] As a further embodiment of this utility model: the ventilation slot corresponds to the side of the dustproof frame that is open.

[0016] As a further embodiment of this utility model: an audible and visual alarm is fixedly installed on the door frame, and the audible and visual alarm is electrically connected to the damper controller.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. An angle encoder is connected to the door hinge via a coupling. The angle encoder monitors the rotation angle of the damper panel. When the angle encoder reading returns to zero, a pair of damper panels are closed. An infrared beam sensor is fixedly installed on the damper panel. The transmitter and receiver of the infrared beam sensor are respectively fixed on one damper panel. When a pair of damper panels are open, the receiver of the infrared beam sensor has no light signal and outputs a low level, indicating that the damper panel is in the open state. When the damper panel is closed, the receiver of the infrared beam sensor detects continuous infrared pulses and outputs a high level, indicating that the damper panel is in the closed state. Through the cooperation of the infrared beam sensor and the angle encoder, multiple detections of the damper panel are achieved.

[0019] 2. By setting a dustproof frame on the outside of the infrared beam sensor, with one side of the dustproof frame open and a ventilation slot on the corresponding side, dust can be prevented while heat dissipation of the infrared beam sensor can be achieved. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a partial sectional view of the present invention;

[0022] Figure 3 This utility model Figure 1 Enlarged view of point A.

[0023] In the diagram: 1. Air door passageway; 2. Door frame; 3. Door hinge; 4. Angle encoder; 5. Air door panel; 6. Dustproof frame; 7. Infrared beam sensor; 8. Ventilation slot; 9. Air door switch control air pipeline; 10. Manual control box; 11. Air door controller. Detailed Implementation

[0024] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] like Figure 1-3 As shown, the mine ventilation door opening and closing detection device includes a ventilation door roadway 1. A door frame 2 is fixedly installed inside the ventilation door roadway 1. A pair of door frames 2 are located at both ends of the ventilation door roadway 1. Door shafts 3 are symmetrically rotatably mounted on the door frames 2. Door panels 5 are fixedly mounted on the door shafts 3. A cylinder (not shown in this embodiment) is installed on the door frame 2 to control the closing of the door panels 5. An angle encoder 4 is connected to the door shafts 3 via a coupling. The angle encoder 4 monitors the rotation angle of the door panels 5. When the reading of the angle encoder 4 returns to zero, the pair of door panels 5 close. This device further ensures the safety of the ventilation door opening and closing. To ensure the stability of the detection of panel 5, an infrared beam sensor 7 is fixedly installed on the damper panel 5. The transmitter and receiver of the infrared beam sensor 7 are respectively fixed on one damper panel 5. When a pair of damper panels 5 are open, the receiver of the infrared beam sensor 7 has no light signal and outputs a low level, indicating that the damper panel 5 is in the open state. When the damper panel 5 is closed, the receiver of the infrared beam sensor 7 detects continuous infrared pulses and outputs a high level, indicating that the damper panel 5 is in the closed state. Through the cooperation of the infrared beam sensor 7 and the angle encoder 4, multiple detections of the damper panel 5 are achieved.

[0026] In one embodiment of this invention, a door switch control air pipe 9 is installed inside the air door tunnel 1. The air door switch control air pipe 9 is laid along the side wall of the air door tunnel 1 and is connected to a door controller 11 and a cylinder that controls the opening and closing of the door panel 5. The door controller 11 controls the opening or closing of the door panel 5. The entire device is integrated and controlled by a PLC control system, facilitating remote control of the closing of the door panel 5.

[0027] As one implementation method in this embodiment, a manual control box 10 is provided on the side of the air door tunnel 1. The manual control box 10 is electrically connected to the air door switch control air pipeline 9. The emergency operation of the air door panel 5 can be realized through the manual control box 10. When the angle encoder 4, the infrared beam sensor 7 or the manual control box 10 fails, the air door panel 5 can be opened or closed by manually operating the manual control box 10.

[0028] As one implementation method in this embodiment, in a specific implementation, an audible and visual alarm can be added to the door frame 2 and electrically connected to the damper controller 11 to issue a prompt voice when the damper door panel 5 is opened or closed.

[0029] As one implementation method in this embodiment, in order to increase the operational stability of the infrared beam sensor 7, a dustproof frame 6 is fixedly installed on the damper panel 5. The infrared beam sensor 7 is installed inside the dustproof frame 6. The installation of the infrared beam sensor 7 can protect the dustproof frame 6. One side of the dustproof frame 6 is open to facilitate the light transmission between a pair of infrared beam sensors 7. Several ventilation slots 8 are opened on one side of the dustproof frame 6. The ventilation slots 8 correspond to the open side of the dustproof frame 6 to facilitate airflow and heat dissipation of the infrared beam sensor 7.

[0030] Working principle:

[0031] An angle encoder 4 is connected to the door hinge 3 via a coupling. The angle encoder 4 monitors the rotation angle of the damper door panel 5. When the reading of the angle encoder 4 returns to zero, a pair of damper door panels 5 are closed. An infrared beam sensor 7 is fixedly installed on the damper door panel 5. The transmitter and receiver of the infrared beam sensor 7 are respectively fixed on one damper door panel 5. When a pair of damper door panels 5 are open, the receiver of the infrared beam sensor 7 has no light signal and outputs a low level, indicating that the damper door panel 5 is in the open state. When the damper door panel 5 is closed, the receiver of the infrared beam sensor 7 detects continuous infrared pulses and outputs a high level, indicating that the damper door panel 5 is in the closed state. Through the cooperation of the infrared beam sensor 7 and the angle encoder 4, multiple detections of the damper door panel 5 are achieved.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A device for detecting the opening and closing of a mine air door, characterized in that, Including the air door tunnel (1), the door frame (2) is fixedly arranged in the air door tunnel (1), the door shaft (3) is symmetrically arranged on the door frame (2), the air door door plate (5) is fixedly arranged on the door shaft (3), the air cylinder for controlling the air door door plate (5) is arranged on the door frame (2), the angle encoder (4) is connected to the door shaft (3) through the shaft coupling, the infrared opposite emission sensor (7) is fixedly arranged on the air door door plate (5), and the emission end and the receiving end of the infrared opposite emission sensor (7) are fixedly arranged on one air door door plate (5) respectively.

2. The mine air door opening and closing detection device according to claim 1, characterized in that, The door frame (2) is provided with a pair, which is arranged at both ends of the air door tunnel (1).

3. The mine air door opening and closing detection device according to claim 1, characterized in that, The air door tunnel (1) is provided with an air door switch control air pipe (9).

4. The mine air door opening and closing detection device according to claim 3, characterized by, The air door switch control air pipe (9) is arranged along the side wall of the air door tunnel (1).

5. The mine air door opening and closing detection device according to claim 3, characterized by, The air door switch control air pipe (9) is connected with the air door controller (11) and the air cylinder for controlling the opening and closing of the air door door plate (5).

6. The mine air door opening and closing detection device according to claim 3, characterized by The side of the air door tunnel (1) is provided with a manual control box (10), and the manual control box (10) is electrically connected with the air door switch control air pipe (9).

7. The mine air door opening and closing detection device according to claim 1, characterized by, The air door door plate (5) is fixedly provided with a dustproof frame (6), and the infrared opposite emission sensor (7) is arranged in the dustproof frame (6).

8. The mine air door opening and closing detection device according to claim 7, characterized in that, The dustproof frame (6) is opened on one side, and a plurality of ventilation grooves (8) are formed on the other side.

9. The mine air door opening and closing detection device according to claim 8, characterized by, The ventilation groove (8) corresponds to the side of the dustproof frame (6).

10. The mine air door opening and closing detection device according to claim 5, characterized by, The audible and visual alarm is fixedly arranged on the door frame (2), and the audible and visual alarm is electrically connected with the air door controller (11).

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